Any fixed, repeating patterns, such as the same volunteer being scheduled at the same service one time per week, should be setup with preassignments. (Setting the volunteer's preferred serving frequency to "one time per week" will not suffice, as that setting is interpreted as a preference, and it does not guarantee that the volunteer will be scheduled exactly one time per week.)
- Click on the Preassignments heading on the left hand side of MSP's main screen.
- Click the "New Preassignment..." button.
- Then simply select the volunteer and specify the fixed pattern for which you'd like him or her to be scheduled.